Confirming the successful raids, Andrei Kartapolov from the Russian army vowed to ramp up the pressure, saying: "We will not only continue strikes... We will also increase their intensity."

Speaking at the time of the attacks, in October, Russian Defence Ministry spokesman Igor Konashenkov said: "Over the past 24 hours, Sukhoi Su-34 and Su-24M fighter jets have performed 20 sorties and hit nine Islamic State installations.

REUTERS

A Russian jet carries out an air strike in Syria

REUTERS

Russia said it had carried out 20 air strikes in just 24 hours

AP

Russian fighter jets and bombers are continuing to strike in Syria

“A bunker-busting BETAB-500 air bomb dropped from a Sukhoi Su-34 bomber near Raqqa has eliminated the command post of one of the terror groups, together with an underground storage facility for explosives and munitions.

"These and other highly exact means of attack in recent days have been used to target objects of Islamic State terrorists.

"Command posts, stores of weapons and oil products, workshops where weapons of suicide bombers are made."

Meanwhile a terrorism expert revealed to Express.co.uk ISIS have vastly exaggerated their military strength and called on Western leaders to launch a co-ordinated fightback which would obliterate the hate group.

He told the BBC: "I have always said I think that it is sensible that we should, ISIL [ISIS] don't recognise a border between Iraq and Syria and neither should we but I need to build the argument, I need to take it to parliament, I need to convince more people.

"We won't hold that vote unless we can see that parliament would endorse action because to fail on this would be damaging, it is not a question of damaging the government it is a question of not damaging our country and its reputation in the world."

He has already pledged to "beef up" the SAS and double the number of British drones to combat ISIS militants in an interview ahead of today's Conservative conference.

The Prime Minister said investment in special forces and surveillance was essential to meeting the terrorist threat facing the UK.

He revealed the UK will buy a fleet of 20 new Protector drones capable of targeting IS extremists in Iraq and Syria.